Automobile-radiator.



W. GRiKSCHEIT.

Patented Nov. 4, 1.912}.

2 SHEETS SHEET 1.

W. GRIKSCHEIT.

AUTOMOBILE RADIATQR.

APPLICATION FILED AU Paten'tcd Nov. 4, 1919.

2 SHEETS-SHEEI 2.

UNITED STATES.

PATENT OFFICE- I WILLIAM GRIKSCHEII", OF DETROIT, MICHIGAN. I

AUTOMOBILE-RADIATOR.

Application filed August 18, 1917. Serial No. 186,992.

T all whom it may concern Be it known that I, \VILLiA GmKsonn-rr, a citizen of the United States, and resident of Detroit, in the county of \Vayne and State oi h'lichigan, have invented certain new and useful Improvements in Automobile-Radiators, of which the following is a specification.

ll1is invention relates to radiators for automobiles and the like; and it has for its object to provide a construction whereby the effective area of the radiating or cooling surfaces ofthe water circulating system can be varied as climatic or seasonal conditions may require; that is to say, the cooling area to which the circulating water is subjected may be reduced during cold weather and increased during warm weather, as desired.

Accordingly the invention. generally stated, comprises a radiator having primary and secondary chambers included in the water circulating system, juxtaposed groups of cooling tubes establishing comnmnieation' between the chambers, and means whereby the water may be caused to How through predetermined tube groups preparatory to itscgress. from the secondary chambers, as conditions may require.

The invention also comprises novel features of construction and combinations of parts which will he hereinafter described and claimed.

In the drawings- Figure 1 is a side elevation of the front portion of radiator embodying the preferred form of my invention.

Fig. 2 is a longitudinal vertica section of the radiator and adjuncts. showing all the tube groups in operation.

-Fig. 3 is a transverse vertical section of the 1':\(ll:\l0l'. :1$ on the line 33 of Fig. 2.

Fig. 4 is a horizontal section. as on the line -l" 'l of Fig. 3.

Referring to the drawings. 10 designates a radiator casing; 11 an inlet at or near the top of the casing. and 12 an outlet at the bottom of the casing. 13 is a pipe leading from the engine jacket 14 to the inlet, 15 is a return pipe leading from the outlet to the jacket. and 16 is a pump to which the return 1 )l, e is comicctcd. 17 is a hollow screw ca; l

for the opening in the top of the radiator casing. 18 is a suit: bly-disposed water re- "eptacle provided with a water-level gage .9. 20 is an overflow pipe leading from the an automobile equipped with a radiator cap to the receptacle, and 21 is a return pipe leading from the receptacle to the outlet neck of the radiator. 22 is an overflow pipe for the water receptacle. These parts, excepting the radiator structure, may be of any usual construction.

The top of the radiator casing comprises a header having two superposed primary chambers 23, 24, the upper of which is provided with the inlet 11; and the bottom of the casing comprises a header having two superposed secondary chambers 25, 26 having adjacent outlets 27, 28 respectively, which comn'mnicate with the common outlet 12. The outlet. portions of the chambers 25, 26 are provided with valves 29, 30, re spectively, which are mounted at right angles to each other on a common vertical stem 31, so that when such stem is partially turned one of the valves is positioned to close the outlet of one of the adjacent chambers and the other valve is positioned to close the outlet of the other chamber. The valve stem is provided with a crank 32 which is preferably connected with a suitable operating rod 33 under the control of the driver of the car.

The primary and secondary chambers are connected by groups of radiating or cooling tubes in such a manner as to establish ajj'ciirculatory serial flow of the water through the chambers and tubes; that is to. say, the chambers 23, 25 are connected by groups of tubes 34; the chambers 2i. 25 are connected by groups of similar tubes 35, and the charm bers 24, 26 are connected by groups of similar tubes 36; the said tubes being preferably arranged in staggered relation, as best seen in Fig. l. In the present instance there are two series of cooling tubes in each group and two rows of tubes of course, the number number of rows may be ished as required.

The operation is as follows: lvhen condi tions are such that a prolonged cooling of the circulating water is desired, a:;. for example, during warm weather, the valve dc vice is positioned to close the outlet 27 of the chamber 25 and open the outlet 25 of the chamber 26. Hence the water entering and leaving the radiator by the inlet 11 and outlet 12 respectively, is constrained to circulate through all the tube groups; that is to say, the water passes through the tubes 34: into the chamber 25; through the tubes 35 in each series. but,

passes through the tubes 3a to the chan'iber 25, and escapes thence through the outlet 12 without coursing through the remaining tubes or the chambers 24, 26.

It is to be understood that my invention. is not limited to the details of construction disclosed, as the same may be varied within the principle of my invention and the scope of the appended claims.

1. A. radiator of the character described comprising a plurality of primary chambers whereof one is provided with. a water inlet, a plurality of secondary chambers having a common outlet, groups of cooling tubes establ'shing a series flow communication between the primary and the secondary chamhers, and means for controlling communication between the secondary chambers and the outlet.

2. .A. radiator of the charmer described comprising a plurality of primary chambers whereof one is provided with a water inlet, a plurality of secondary chambers having a common outlet, groups of cooling tubes establishing a series flow con'mlunication between the primary and the secondary chambers, and means for controlling communication between the secondary chambers and the outlet, said means comprising two valves arranged to permit the opening and the closing of the latter chambers in alternation.

3. A radiator of the character described comprising a pair of upper chambers, one of which is provided with a Water inlet, a pair of lower chambers having a common outlet, cooling tubes connecting the top chamber of the upper pair with the top chamber of the lower pair, cooling tubes connecting the lower chamber of the upper pair with the top chamber of the lower pair, cooling tubes connecting the lower chamber of the upper pair with the lower cl'iamber of the lower pair, and valve means for controlling communication between. the pair of lower chambers and the outlet.

4, A radiator of the character described comprising a pair ofupper chambers, one of which is provided With a water inlet, cooling tubes connecting the top chamber of the upper pair with the top chamber of the lower pair, cooling tubes connecting the lower chamber of the upper pair with the top chamber of the lower pair, cooling tubes connecting the lower chamber of the upper pair with the lower chamber of the lower pair, and means for controlling communicationbetw'een the pair of lower chambers and the outlet, said means comprising two valves arranged to permit the opening and the clos ing of the latter chambers in alternation.

Signed at Detroit, in the county of Wayne and State of Micihigan, this 16th day of August, A. D. 191.

WILLIAM GRIKSCHEIT. 

